Mean, standard deviation and normal distribution HSS.ID.A.4 Grade 10 ACTASPIRE Practice Test Questions TOC | Lumos Learning

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Suppose the weight of an empty pallet is supposed to weigh \(30\pm 3\) pounds. Pallets from a random sample were weighed and the weights were normally distributed. The mean weight of the pallets was 31 pounds with a standard deviation of 2. What percent of the sample of pallets weighed within the \(30\pm 3\) acceptable weight?